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Features

Weighing a Monster Locomotive, A New Aviation Instrument and more

By Herbert T. Wade

Our Deepest Wells

Some of the Scientific and Practical Problems Which They May Help Us To Solve

By Robert G. Skerrett

Gaging Screw Threads with a Beam of Light

By Merrill M. Hunting

What About Our Commercial Aviation?

By George Gaulois

The Fruits of Scientific Farming

Proofs of the Pudding Which the Department of Agriculture Has Been Cooking These Many Years

By C. H. Claudy

Motor Bus vs. Street Car

Some of the Reasons Why the Truck Is Doing So Well in This Competition

By R. E. Fulton

Mansions of Mud

How California is Meeting the Housing Problem by Building in Adobe

By John L. Von Blon

Battling with Snow and Ice in the Streets of New York

By Ralph Howard

Again the Steam Automobile

The Latest Effort to Produce a Steam Car with All the Advantages of Gas and of Steam

Melting Brass Electrically, The Artificial Daylight of Photoplay Land

By Raymond Francis Yates

Steel and Stone Cannot Stop Them

The Amazing Ravages of the White Ant, Which Extend Even Into Temperate Regions

By George H. Dacy

Better Light for Microscopy

By H. E. Howe

Conquering the Stubborn Soil

By H. A. Crafts

Firing Shell into a Concrete Tank

The Experimental Water Butt at the Aberdeen Proving Ground of the United States Army

By Herbert T. Wade

Electron Tube Generator

Departments

  • Departments

    Correspondence - February 28, 1920

  • Inventions New and Interesting - February 28, 1920

  • Recently Patented Inventions - February 28, 1920

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February 1920

See the World from a Different Perspective

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